Potassium Formate Molecular Formula: HCOOK Molecular Weight: 84.12 Cas No: 590-29-4 Potassium FormateMolecular Formula: HCOOKMolecular Weight: 84. ... Appearancewhite crystal colorless transparent liquid KOH, %, ≤0.50.3K2CO3, %, ≤1.00.5KCL, %, ≤0.50.5Specific wt. (g/cm3)20oC, ≥/1.57Use: 1 ...